Why Invoice Status Update (ISU) / Invoice Response is not reaching Invoice after CIG Integration?

For ISU to reach Invoices successfully in CIG Integration, the below Configurations / Settings need to be maintained:

1. BTE Configurations
2. Parameters / Table Entries
3. BADI for Document Status Update

The following sections in CIG Buyer Configuration Guide need to be referred for making the above mentioned configurations.

1. How to maintain parameters for invoice status update (7.1.1.8.1.1) 
2. How to configure the invoice status update transaction (7.1.1.8.1.2) 
3. How to implement BADI for Document Status Update (5.1.1.2.4)

Note: The Topic Numbers provided above are from the CIG Buyer Configuration Guide and may subject to vary depending on future release. 

Steps to download the CIG Configuration Guide from Ariba Connect:

1. Login to SAP Ariba Connect via https://support.ariba.com.
2. Click Product Information and Documentation
3. Click Cloud Integration and click Documentation.
4. Click SAP Ariba Cloud Integration Gateway
5. Click SAP Ariba Cloud Integration Gateway configuration guide and download the PDF file.

Else, click on the below URL to download the document directly.

https://help.sap.com/viewer/32ba8b3dbca645e9b8b7b3e84d61e3db/LATEST/?1=1

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